Original U.S. Vietnam War INERT 81mm M57A1 White Phosphorus Mortar Cutaway M301A2 Round with Fuze on Custom Display Stand U.S. Ammo This is definitely a revolver

This is definitely a revolver that saw extensive service during the war

Sack Happy

and not "SA"

TRANSMITTER BC - 611 - F

and got this as a memento

Original U.S. Vietnam War INERT 81mm M57A1 White Phosphorus Mortar Cutaway M301A2 Round with Fuze on Custom Display Stand U.S. Ammo This is definitely a revolverOriginal Item: Only One Available. This is a totally inert deactivated cutaway example of the 81mm White Phosphorus Mortar Round. The device has no explosive filling or charges and cannot be converted to be an explosive device. This is completely inert and in compliance with BATF guidelines on inert ordnance. Not Available For Export. When it comes to designing a training program for military personnel, instructors are faced with several challenges.